微波消解-ICP-OES法测定水獭肝中的铁、锌、铜和镁含量

目的建立水獭肝中Fe、Zn、Cu和Mg 4种无机元素含量的分析方法。方法采用微波消解电感耦合等离子体原子发射光谱法(ICP-OES)法测定水獭肝中4种重金属元素,用国家生物成分分析标准物质黄芪验证方法的准确度。结果该方法线性良好,相关系数均≥0.999 9,相对标准偏差(n=6)≤2.0%,回收率在97%~103%之间,标准物质黄芪的测定值与标准值基本吻合。结论该方法快速、准确、灵敏度高,可以用于水獭肝中的铁、锌、铜、镁的测定。     

土鳖虫药材无机元素的测定及其药用质量考察

目的 考察土鳖虫药材无机元素类别与含量状况.方法 对样品进行性状和理化鉴别检验;采用ICP-OES法和ICP-MS法分别测定虫体和食物团中Na、Al、Mg、K、Ca、Mn、Fe、Cu、Zn、Cr、Ni、As、Cd、Pb 14种元素的含量.结果 土鳖虫药材含有较多无机成分,其中Al、K及部分重金属及有害元素含量偏高,并且体腔食物团中无机元素含量普遍高于虫体.结论 土鳖虫药材质量堪忧,应注意药用安全.     

电感耦合等离子体发射光谱法测定右旋糖酐铁重金属元素中的电离干扰及抑制方法

目的建立用电感耦合等离子体发射光谱法（ICP-OES）测定右旋糖酐铁中铅、镉、砷、汞、钴、钒、硒、钼8种重金属元素的分析方法。方法通过检测波长考察,仪器参数优化,校正光谱干扰,验证电离干扰并考察抑制方法,测定8种重金属元素的量。结果抑制电离干扰,待测元素回收率提高5%~10%,方法准确度良好,加样回收率在95.7%~101.1%,方法精密度良好（RSD<3.6%,n=6）。各待测元素线性关系良好,相关系数均大于0.999,检出限为0.15~8.09 ng/mL,定量限为0.46~24.26 ng/mL。结论方法准确度高、灵敏度高、迅速可靠,可用于右旋糖酐铁中8种重金属元素的测定。     

ICP-OES法测定浙贝母鲜切饮片中重金属及微量元素的含量

目的：测定不同产地浙贝母鲜切饮片中重金属及微量元素的含量。方法：应用微波消解技术,以及电感耦合等离子发射光谱法（ICP-OEC）,测定浙贝母鲜切饮片中镉（Cd）、铜（Cu）、汞（Hg）、铅（Pb）、砷（As）的含量。结果：5种元素的回归方程线性关系良好,相关系数在0.9997～0.9999之间,加样回收率在95.0%～113.2%之间,RSD为1.8%～6.6%。结论：该方法简便,高效,准确,可很好地测定浙贝母鲜切饮片5种重金属及微量元素的含量,并为制定浙贝母鲜切饮片中重金属限量提供可靠依据。     

Investigating the Recycling Potential of Glass Based Dye-Sensitized Solar Cells—Melting Experiment

The effects of climate change are becoming increasingly clear, and the urgency of solving the energy and resource crisis has been recognized by politicians and society. One of the most important solutions is sustainable energy technologies. The problem with the state of the art, however, is that production is energy-intensive and non-recyclable waste remains after the useful life. For monocrystalline photovoltaics, for example, there are recycling processes for glass and aluminum, but these must rather be described as downcycling. The semiconductor material is not recycled at all. Another promising technology for sustainable energy generation is dye-sensitized solar cells (DSSCs). Although efficiency and long-term stability still need to be improved, the technology has high potential to complement the state of the art. DSSCs have comparatively low production costs and can be manufactured without toxic components. In this work, we present the world’ s first experiment to test the recycling potential of non-toxic glass-based DSSCs in a melting test. The glass constituents were analyzed by optical emission spectrometry with inductively coupled plasma (ICP-OES), and the surface was examined by scanning electron microscopy energy dispersive X-ray (SEM-EDX). The glass was melted in a furnace and compared to a standard glass recycling process. The results show that the described DSSCs are suitable for glass recycling and thus can potentially circulate in a circular economy without a downcycling process. However, material properties such as chemical resistance, transparency or viscosity are not investigated in this work and need further research.     

Assessment of trace elements in canned fishes (mackerel, tuna, salmon, sardines and herrings) marketed in Georgia and Alabama (United States of America)

The concentrations of mercury and 13 other trace metals in 104 canned fish samples purchased within the states of Georgia and Alabama (United States of America) were determined using the direct mercury analyzer (DMA) and the inductively coupled plasma-optical emission spectrometer (ICP-OES). The ranges obtained for the elements analyzed in mg/kg (wet weight) are as follows: Hg (0.02–0.74), Ag (0.0–0.20), As (0.0–1.72), Cd (0.0–0.05), Cr (0.0–0.30), Fe (0.01–88.4), Pb (0.0–0.03), Mn (0.01–2.55), Ni (0.0–0.78), Co (0.0–0.10), Cu (0.01–5.33), Sn (0.04–28.7), V (0.0–0.31) and Zn (0.14–97.8). Three tuna samples had Hg level above the European dietary limit of 0.5 mg Hg/kg. The mean Hg concentrations in the tuna (285 μg/kg) and sardine (107 μg/kg) brands were higher than the averages posted by the pink salmon (36.1 μg/kg), red salmon (32.8 μg/kg) and mackerel (36.4 μg/kg) brands. Two tuna samples and a sardine sample exceeded the Australian permissible limit of 1 μg/g inorganic arsenic (wet weight). Two samples (brand 15: herring) had zinc levels exceeding the Food and Agriculture Organization (FAO) recommended limit of 40 mg/kg and two pink salmons also exceeded the Brazilian regulatory limit of 0.1 mg Cr/kg. One tuna sample had a cadmium level slightly exceeding the Codex Committee on Food Additives and Contaminants draft guideline of 0.50 mg Cd/kg. However, the concentrations of lead, cadmium and copper were below the corresponding MAFF guidelines of 2.0, 1.0 and 30 mg/kg, respectively. Also, based on the United States Environmental Protection Agency (US EPA) health criteria for carcinogens, there are no health risks with respect to Pb, Cr, Cu and Zn concentrations in canned fishes analyzed. The result of the one-way analysis of variance (ANOVA) conducted on the data suggested that significant variations (P<0.05) existed in the concentrations of Hg, As, Co, Cr, Cu, Fe, Mn, Sn, V, and Zn across the various fish species and canned fish brands analyzed. The estimated weekly intakes of Hg, As, Cd, Pb, Sn, Fe, Cu and Zn for a 60 kg adult consuming 350 g of fish/week were below the respective provisional tolerable weekly intakes (PTWI) in μg/kg body weight for: Hg: 5; As: 15; Cd: 7; Pb: 25; Sn: 14000; Fe: 5600; Cu: 3500; and Zn: 7000.     

ICP-OES用于麻杏石甘汤中的无机元素分析

目的研究麻杏石甘汤水煎液中Ca、Mg、Fe、Cu、Mn、Zn等6种无机元素的溶出及不同化学性态分布。方法应用0.45μm微孔滤膜进行初级形态分离,D401型螯合树脂、732型阳离子交换树脂和三氯甲烷萃取法进行次级化学形态分离,应用电感耦合等离子体发射光谱仪(ICP-OES)对各元素不同形态的含量进行测定。结果麻杏石甘汤水煎液中无机元素可溶态分布比例Ca最高为63.84%,可溶态中的各种次级形态以游离的无机态为主,也有少量的有机结合态,Fe的有机态分布比例最高,为38.53%,Ca次之为18.91%。结论麻杏石甘汤水煎液中无机元素以可溶态的Ca为主成分元素,其他多种元素形态共同存在的复杂水溶体系。     

ICP-OES法测定挂面、粉条和膨化食品中的铝

目的:建立挂面、粉条和膨化食品中铝的电感耦合等离子发射光谱(ICP-OES)检测方法。并了解此三类食品中铝的含量。方法:样品经湿式消解后,用电感耦合等离子体发射光谱法进行测定,外标法定量。结果:方法最低检出限为0.024μg/ml,最低检出浓度0.600 mg/kg;在0.200μg/ml～50.0μg/ml范围内呈线性关系,相关系数r=0.9999,回收率在91.9%～106.7%之间;测定结果相对标准偏差为0.88%～3.06%。测定的三类食品中粉丝铝含量最高,膨化食品其次,挂面最低。结论:方法操作简便准确、干扰小、检出限低、线性范围广,适用于食品中铝的测定。     

电感耦合等离子体发射光谱法同时测定马蹄甲中的7种元素

目的：应用电感耦合等离子体发射光谱仪对马蹄甲中7种元素进行分析。方法：供试品经消解后,采用电感耦合等离子体发射光谱法（ICP—OES）进行测定。结果：5中元素含量次序依次为Cr、Ni、V、Li、Pb,Cd和As未检出。结论：Pb、Cd、As这三种有害元素均不超标,马蹄甲作为药物开发具有广阔前景。